1. Intext questions I

1. How is our atmosphere different from the atmospheres on Venus and Mars?

 

Our atmosphere is made up of a variety of gases such as carbon dioxideoxygencarbon monoxidenitrogen ($78.08$%), carbon dioxideoxygennitrogencarbon monoxide ($20.95$%), nitrogencarbon dioxidecarbon monoxideoxygen ($0.03$%) and water vapour (in varying proportion). On Venus and Mars, argoncarbon dioxideoxygennitrogen makes up $95-97$ percent of the atmosphere. It is believed that no life could exist on these planets as a result of this.

2. How does the atmosphere act as a blanket?

 

It is well known that air is a heat conductorbad conductorsemi-conductorgood conductor of heat, and oxygenairargonnitrogen makes up the majority of our atmosphere. Due to this reason, the atmosphere keeps the Earth's average temperature fairly steady during the day and even during the whole year. During the day and at night, the atmosphere prevents a sudden increase in temperature. It reduces the rate at which heat escapes into space.